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Earnings Per Common Share
3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Earnings Per Common Share
EARNINGS PER COMMON SHARE
Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted earnings per share gives effect to all dilutive common shares outstanding during the reporting period. The dilutive shares we consider in our diluted earnings per share calculation relate to our outstanding stock options, restricted stock awards and restricted stock unit awards.
We determine the dilutive effect of our outstanding stock options using the "treasury stock" method. Under this method, we assume the exercise of all of the outstanding stock options whose exercise price is less than the weighted-average market value of our common stock during the reporting period. This method also assumes that the proceeds from the hypothetical stock option exercises are used to repurchase shares of our common stock at the weighted-average market value of the stock during the reporting period. The net of the assumed stock options exercised and assumed common shares repurchased represents the number of dilutive common shares, which we add to the denominator of the earnings per share calculation.

The components of basic and diluted earnings per share were as follows for the three-month periods ended March 31, 2017 and 2016:
 
Three Months Ended March 31,
(In Thousands, Except Share Data)
2017
 
2016
 
Basic
 
Diluted
 
Basic
 
Diluted
Net income
$
19,936

 
$
19,936

 
$
22,427

 
$
22,427

Weighted-average common shares outstanding
25,443,101

 
25,443,101

 
25,209,888

 
25,209,888

Add dilutive effect of restricted stock unit awards

 
248,717

 

 
154,742

Add dilutive effect of stock options

 
162,363

 

 
231,807

Weighted-average common shares
25,443,101

 
25,854,181

 
25,209,888

 
25,596,437

Earnings per common share
$
0.78

 
$
0.77

 
$
0.89

 
$
0.88

Awards excluded from diluted earnings per share calculation(1)

 

 

 
180,912

(1)
Outstanding awards that are not "in-the-money" are excluded from the diluted earnings per share calculation because the effect of including them would have been anti-dilutive.